The phrase "a decrease over" is correct and usable in written English.
It can be used when discussing a reduction in quantity, value, or level over a specific period or in relation to another variable.
Example: "There was a significant decrease over the last quarter in sales figures."
Alternatives: "a decline over" or "a reduction over".
The second study found reduced inhibition immediately after the workshop, an increase after the sketch skills workshop, and a decrease over the semester.
For the two other variables, however, the evidence does not demonstrate a decrease over time in the relationship between family background and children's educational attainment.
A decrease over time in reactivity and variability in swimming responses among fish of both origins showed that captivity only does not fully explain wild fish behaviour changes and ontogenic modifications are likely interplaying.
The volume and adiabatic compressibility decrease from pH 4 to 2. The change in ellipticity shows a decrease over the same pH range from 70%to40%0% of its α-helix content.
The ISR in the glass beads and anatase experiments showed a progression toward the maximum levels of quantified stress and then a decrease over time.
Its prevalence has been shown to depend on the time interval between surgery and survey with a decrease over time [58, 59].
Moreover, the GBFS are inefficient for oxygen permeability at 90 days but they however allow a decreasing over long term.
These are often bought to cover a mortgage, which also decreases over time as the capital is paid off.
In other words, the Hubble "constant" isn't really a constant, but is decreasing over time.
Trinity saw a decrease of over 100 enrolled students from 1916-1917 and 1918-1919.
The Durbin Amendment led the Federal Reserve to cap interchange fees at 21 cents (a decrease of over 50percentt).
